Polymerization of butadiene with a mccl5-air3-ether or amine or amideiodine catalyst

Claim 1

IN A PROCESS FOR THE POLYMERIZATION OF 1,3-BUTADIENE WITH A CATALYST COMPRISING AN ORGANOALUMINUM COMPOUND HAVING THE FORMULA R2A1, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL AND CYCLOALKYL, AND MOLYBDENUM PENTACHLORIDE IN THE PRESENCE OF A PROMOTER SELECTED FROM THE GROUP CONSISTING OF DIMETHYL ETHER, DIETHYL ETHER, DIISOPROPYL ETHER, DIN-PROPYL ETHER, DI-N-BUTYL ETHYL N-PROPYL ETHER, TERT-BUTYL TETRAMETHYLENE OXIDE (TETRAHYDROFURAN), 1,3-DIOXANE, 1,4DIOXANE, 1,2-DIMETHOXYETHANE, 1,2-DIETHOXYETHANE, 1,2-DIN-PROPOXYETHANE, METHOXYETHOXYETHANE, METHOXY-N-PENTOXYETHANE, ETHOXY -N-HEXOXYETHANE, DI-N-NONOXYETHANE, TRIMETHYLAMINE, TRIETHYLAMINE, TRI-N-PROPYLAMINE, TRI-NBUTYLAMINE, TRI-TERT-BUTYLAMINE, TRI-N-HEXYLAMINE, METHYLDIETHYLAMINE, DIEMTHYLHEXYLAMINE, N-BUTYL-DI-N-OCTYLAMINE, DI-TERT-BUTYL-N-DODECYLAMINE, METHYLETHYL-N-PROPLYAMINE, N,N-DIEMTHYLANILINE, N-METHYL-N-ETHYLANILINE, N,N-DIISOPROPYLANILINE, N,N-DI-N-BUTYLANILINE, N-ETHYL-NDODECYLANILINE. N,N-DI-N-BUTYL-4-TOLUIDINE, N-METHYLMORPHOLINE, N-OCTYLMORPHOLINE, N-TERT-HEXYLMORPHOLINE, N-DODECYLMORPHOLINE, PYRIDINE, 2,4,6-TRIMETHYLPYRIDINE, 3,5-DI-N-HEXYLPYRIDINE, 4-TERT-BUTYLPYRIDINE, N-METHYLPIPERIDINE, N-ISORPORLYPIPERIDINE, N-DODECYLPIPERDINE, N, N-DIMETHYLFORMAMIDE, N.N-DIETHYLACETAMIDE, N-METHYLN-N-BUTYLPROPIONAMIDE,N-N-DI-N-HEXYLCAPRYLAMIDE, N, N-DI-OCTLYLFORMAMIDE, N-BENZYLIDENANILINE, N-PROPYLIDENANILINE, N-BUTYLIDENANILINE, N-(1-ETHYLBUTYLIDENE)4-TOLUIDIEN, N-(1-BUTYLOCTYLIDENE) ANILINE, N-BUTYLIDENEN-BUTYLAMINE, N-ETHYLIDENETHYLAMINE, N-BENZYLIDENETHYLAMINE, AND N-BENZYLIDENEDODECYLAMINE, THE AMOUNT OF SAID ORGANOALUMINUM COMPOUND BEING IN THE RANGE OF 0.9 TO 3 MOLS PER MOLE OF SAID MOLYBDENUM PENTACHLORIDE, AND THE AMOUNT OF SAID PROMOTER BEING IN THE RANGE OF 0.1 TO 30 MOLS PER MOL OF SAID MOLYBDENUM PENTACHLORIDE, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID POLYMERIZATION IN THE PRESENCE OF IODINE, THE AMOUNT OF IODINE BEING IN THE RANGE OF 0.2 TO 1 MOL PER MOL OF ORGANOALUMINUM COMPOUND.